Java Question B4J ba.raiseEventFromDifferentThread not working

somed3v3loper · Jun 21, 2016

Hello all ,

It could be a very simple problem but I have been searching forum and trying different ways to solve it for hours .
I am writing a wrapper for Twitter4J and it is working but I don't know how to call a sub .
The following will log

B4X:

From try: stream_update
What happened?java.lang.NullPointerException

And even without try block , sub is not called .
I changed getObject() to this and null without any success .

B4X:

        @Override
        public void onStatus(Status status) {
           
            try{
                ba.Log("From try: "+eventName + "_update" );
                ba.raiseEventFromDifferentThread(getObject(), null, 0, eventName + "_update" , false, new Object[] {status});
               
            }
             catch (Exception e){
                 ba.Log("What happened?"+e);
             }
           
        }

Erel · Jun 21, 2016

Remove the try / catch block and post the logs.

somed3v3loper · Jun 21, 2016

Erel said:
Remove the try / catch block and post the logs.

I already tried without try block .
Sub is not called from library .
By the way just in case it was not clear , I am using B4J .

Erel · Jun 21, 2016

The sub is not called because there is an exception. You need to post the full stack trace from the logs.

somed3v3loper · Jun 21, 2016

Erel said:
The sub is not called because there is an exception. You need to post the full stack trace from the logs.

How can we get the full stack trace from the logs ?

somed3v3loper · Jun 21, 2016

Sorry I got full stack trace .
Will see

somed3v3loper · Jun 21, 2016

Erel said:
The sub is not called because there is an exception. You need to post the full stack trace from the logs.

Here is the log

B4X:

Program started.
[Tue Jun 21 10:11:22 AST 2016]Establishing connection.
[Tue Jun 21 10:11:24 AST 2016]Connection established.
[Tue Jun 21 10:11:24 AST 2016]Receiving status stream.
From try: stream_update
class java.lang.NullPointerException: null
    at smm.twitter4jp.TwitterStreamer$1.onStatus(TwitterStreamer.java:122)
    at twitter4j.StatusStreamImpl.onStatus(StatusStreamImpl.java:75)
    at twitter4j.StatusStreamBase$1.run(StatusStreamBase.java:105)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

Erel · Jun 21, 2016

ba is null. Where is it set?

somed3v3loper · Jun 21, 2016

Erel said:
ba is null. Where is it set?

Thanks a lot .
I did not think about that because ba.Log(); was working .
I set it now and I just get signature does not match that is something I will take care of

Erel · Jun 21, 2016

somed3v3loper said:
I did not think about that because ba.Log(); was working .

This was indeed confusing. BA.Log is a static method so the object instance was not used.

The "correct" way to write it is:

B4X:

BA.Log("from try...

somed3v3loper · Jun 21, 2016

Erel said:
This was indeed confusing. BA.Log is a static method so the object instance was not used.

The "correct" way to write it is:

B4X:

BA.Log("from try...

It was working with small letters that is also confusing .
Anyway thanks a lot for your usual great support

Java Question B4J ba.raiseEventFromDifferentThread not working

somed3v3loper

Well-Known Member

Erel

B4X founder

somed3v3loper

Well-Known Member

Erel

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somed3v3loper

Well-Known Member

somed3v3loper

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somed3v3loper

Well-Known Member

Erel

B4X founder

somed3v3loper

Well-Known Member

Erel

B4X founder

somed3v3loper

Well-Known Member

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